1. See attachment.
2. See attachment.
3. Three resistors are connected in series. Then they are connected in parallel. In which configuration will the resistance be greatest?
c. It won't make any difference
4. See attachment.
5. See attachment.
Please see the attached file.
In question 3 I elaborated a little bit,and proved that when resistors ...
The solution also shows that the equivalent resistance of resistors in parallel is ALWAYS lower than the smallest resistor.